This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A081965 #4 Dec 05 2013 19:56:03 %S A081965 1,5,7,15,16,31,27,45,49,73,62,103,86,129,133,163,146,217,178,251,248, %T A081965 293,262,359,316,399,386,461,418,569,472,585,580,657,634,761,675,813, %U A081965 796,911,830,1039,908,1083,1072,1171,1088,1313,1192,1399,1334,1489 %N A081965 Diagonal of A081964. %F A081965 a(n)=A077161(n), n>2. [From _R. J. Mathar_, Dec 15 2008] %Y A081965 Cf. A081964, A081966. %K A081965 nonn %O A081965 1,2 %A A081965 _Amarnath Murthy_, Apr 03 2003 %E A081965 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 08 2003